package filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import pojo.Admin;

@WebFilter({ "/cargo/*" })
public class LoginFilter implements Filter {

    /**
     * Default constructor. 
     */
    public LoginFilter() {
        // TODO Auto-generated constructor stub
    }


	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		HttpSession session = req.getSession();
		Admin user =  (Admin) session.getAttribute("user");
		System.out.println("test...");
		if (user==null) {
			resp.sendRedirect("/cargo/showCategory");
		}else{
			chain.doFilter(request, response);
		}
	}


	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
		
	}

	@Override
	public void destroy() {
		
	}
}
